[OTHER][DB] added loadMapItems() and getMapItems()
[OTHER] fixed resources.qrc behavior
[DB] branch POM_db_improvements created
[OTHER] removed thumbnails dir
[CORE][DB] thumbnails saved with progressive index, ...
[DB] update rows id instead of clean and rebuild,
[CORE] MapHandler::replyFinished returns the item without recreating it
[UI] only one filedialog is opened when editing albums path